Dog Water Filter Replacement, Dog Water Bowl Filter, Pet Water Filter Compatible with Petmate Replendish Mason Automatic Gravity Waterer Bowls for Cats and Dogs, 6 Pack

Customers find the water filter works well for keeping their pets' water fresh and clean, fits perfectly in Petmate bowls, and is easy to install and replace. Moreover, they consider it a great value and appreciate its compatibility. However, the durability receives mixed feedback, with some customers reporting that the filters turn rusty. Additionally, several customers note that the water turns black during use.